Commit | Line | Data |
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aaa7ced1 BJ |
1 | #include <stdio.h> |
2 | #include "1.defs.h" | |
3 | #include "def.h" | |
4 | extern int linechar, errflag, debug; | |
5 | extern int (*input)(), (*unput)(); | |
6 | ||
7 | ||
8 | ||
9 | uptolow(c) /*translates upper to lower case */ | |
10 | int c; | |
11 | { | |
12 | if ('A' <= c && c <= 'Z') | |
13 | return(c+'a'-'A'); | |
14 | else | |
15 | return(c); | |
16 | } | |
17 | ||
18 | rdfree(func) | |
19 | int (*func)(); | |
20 | { | |
21 | int c; | |
22 | while ( (c = (*input)()) != '\n') | |
23 | { | |
24 | (*func)(c); | |
25 | } | |
26 | } | |
27 | ||
28 | rdstand(func) | |
29 | int (*func)(); | |
30 | { | |
31 | int c; | |
32 | while ( (c=(*input)()) != '\n') | |
33 | { | |
34 | (*func)(c); | |
35 | } | |
36 | } | |
37 | ||
38 | labfree(func) /* labels in freeform input */ | |
39 | int (*func)(); | |
40 | { | |
41 | int c; | |
42 | int temp[6]; | |
43 | int j; | |
44 | for (j = 0; j < 5; ++j) | |
45 | { | |
46 | while ( (c = (*input)()) == ' ' || c == '\t' ); | |
47 | if (c == '\n') | |
48 | { | |
49 | if (j != 0) | |
50 | { | |
51 | temp[j] = '\0'; | |
52 | error("label without code - ignored:","",""); | |
53 | } | |
54 | } | |
55 | if (c < '0' || c > '9') | |
56 | { | |
57 | (*unput)(c); | |
58 | break; | |
59 | } | |
60 | else | |
61 | { | |
62 | temp[j] = c; | |
63 | (*func)(c); | |
64 | } | |
65 | } | |
66 | for ( ; j < 5; ++j) | |
67 | (*func)(' '); | |
68 | } | |
69 | ||
70 | labstand(func) /* labels in standard form input */ | |
71 | int (*func)(); | |
72 | { | |
73 | int c; | |
74 | int j; | |
75 | ||
76 | for (j = 0; j < 5; ++j) | |
77 | { | |
78 | c = (*input)(); | |
79 | if (c == '\n') | |
80 | { | |
81 | error("line shorter than 5 characters","",""); | |
82 | errflag = 1; | |
83 | (*unput)('\n'); | |
84 | } | |
85 | if (c == '\t' || c == '\n') | |
86 | { | |
87 | for ( ;j<5; ++j) | |
88 | (*func)(' '); | |
89 | return; | |
90 | } | |
91 | (*func)(c); | |
92 | } | |
93 | (*input)(); /* throw away continuation char */ | |
94 | } | |
95 | ||
96 | ||
97 | ||
98 | contfree() /* identify continuation lines in free-form input */ | |
99 | { | |
100 | return(nonblchar(_diglet,0)); /* any non-alpha non-digit */ | |
101 | } | |
102 | ||
103 | ||
104 | nonblchar(class,yesno) | |
105 | int class,yesno; | |
106 | { | |
107 | #define CARDSIZE 121 | |
108 | int temp[CARDSIZE]; | |
109 | int j; | |
110 | for (j=0; (temp[j]=(*input)()) == ' ' || temp[j] == '\t'; ++j) | |
111 | if (j>=CARDSIZE-1) | |
112 | { | |
113 | temp[CARDSIZE-1] = '\0'; | |
114 | error ("line unexpectedly long","",""); | |
115 | break; | |
116 | } | |
117 | if (temp[j]!=EOF && classmatch(temp[j],class)==yesno) | |
118 | return(1); | |
119 | else | |
120 | { | |
121 | for ( ; j >= 0; --j) | |
122 | (*unput)(temp[j]); | |
123 | return(0); | |
124 | } | |
125 | } | |
126 | ||
127 | ||
128 | contstand() /* continuation lines in standard form input */ | |
129 | { | |
130 | int temp[6]; | |
131 | int i; | |
132 | ||
133 | for (i = 0; i < 6; ++i) | |
134 | { | |
135 | temp[i] = (*input)(); | |
136 | if (temp[i] == '\t' || temp[i] == '\n' || temp[i] == '\0' || temp[i] == EOF) | |
137 | { | |
138 | for ( ;i >= 0; --i) | |
139 | (*unput)(temp[i]); | |
140 | return(0); | |
141 | } | |
142 | } | |
143 | if (temp[5] != '0' && temp[5] != ' ') | |
144 | return(1); | |
145 | else | |
146 | { | |
147 | for ( i = 5 ; i >= 0; --i) | |
148 | (*unput)(temp[i]); | |
149 | return(0); | |
150 | } | |
151 | } | |
152 | ||
153 | ||
154 | ||
155 | comstand(posafter) /* standard form comments */ | |
156 | int posafter; | |
157 | { | |
158 | int c; | |
159 | c = (*input)(); | |
160 | if (!posafter) | |
161 | (*unput)(c); | |
162 | if (c == 'c' || c == '*' || c== '#') | |
163 | return(1); | |
164 | else | |
165 | return(0); | |
166 | } | |
167 | ||
168 | ||
169 | comfree(posafter) | |
170 | int posafter; | |
171 | { | |
172 | return(comstand(posafter)); | |
173 | } | |
174 | int (*rline[])() = {rdfree,rdstand}; | |
175 | int (*comment[])() = {comfree,comstand}; | |
176 | int (*getlabel[])() = {labfree, labstand}; | |
177 | int (*chkcont[])() = {contfree,contstand}; | |
178 | ||
179 | blankline() | |
180 | { | |
181 | if ( nonblchar(_nl,1) ) /* first non-blank is nl */ | |
182 | { | |
183 | (*unput) ('\n'); | |
184 | return(1); | |
185 | } | |
186 | else return(0); | |
187 | } | |
188 | ||
189 | #define maxunbp 80 | |
190 | char unbuf[maxunbp+1]; | |
191 | int unbp; | |
192 | ||
193 | empseek(linebeg) | |
194 | int linebeg; | |
195 | { | |
196 | unbp = 0; | |
197 | if (fseek(infd,(long)(linebeg+rtnbeg),0) == -1) | |
198 | faterr("in disk seek","",""); | |
199 | } | |
200 | ||
201 | inchar() | |
202 | { | |
203 | if (unbp > 0) | |
204 | return( unbuf[--unbp] ); | |
205 | else | |
206 | { | |
207 | return( uptolow(getc(infd)) ); | |
208 | } | |
209 | } | |
210 | ||
211 | ||
212 | unchar(c) | |
213 | int c; | |
214 | { | |
215 | if (unbp >= maxunbp) | |
216 | faterr("dec.rat: unbuf size exceeded","",""); | |
217 | if(c!=EOF)unbuf[unbp++] = c; | |
218 | } |